All of the research places get their powders from China, so it's not really in their power to exert quality control. You'd have to personally have it checked. All UG stuff is a crap shoot. I know that, having taken real pharm accutane & arimidex, the research versions don't come close to their potency at the same dosage. However, since they're waaaaaay cheaper, you can just take more. In a perfect worls, I'd only take real pharm products. However, since I can't exactly go the pharmacy & get test, femera & accutane, I have to settle for UG.